Sunni-Shi'a

The house of Lady Fatima AS was being attacked by a group of Saqeefah people to force her and her husband and her family to give allegiance to the Saqeefah government. that was the reason of the very early demise of Lady Fatima AS. We believe that That attack was the reason for her martyrdom.
The attack on the house of Fatima Zahra (AS) has been admitted by leading Sunni leaders including Abu Bakr himself who openly said when he was about to die that I wish that I did not attack the house of Fatima even if it was a center  of war against me. This is narrated by eminent Sunni scholars like:

1. Al-Tabarani in al-Mo'jam al-Kabeer , 

2. al-Dhahabi  in Meesan al-E'tidaal,

3. Ibn Qutaiba and quoted by Ibn A'bd Rabbih in his book al-E'qd al-Fareed.

4. al-Mas'oodi in amorous al-Dhahab.

5. Ibn Asaakir in Tareekh Dimishq.

6. al-Haithami in Majma' al-Zawaa'id.

7. al-Soyouti in Musnad Fatimah 

8. al-Muttaqi al-Hindi in Kanz al-Ummaal.

Beside this, we have hundreds of Sunni books who narrated about the attack and fire to burn the house or door of Fatimah e.g.

1. Tareekh al-Tabari , V.2, P. 443.

2. Mussannaf Abi Shaibah, V. 8, P. 572.

3. al-E'qd al-Fareed , V.2, P. 73.

4. Ibn Abd al-Barr in al-Estee'aab, V. 1, P. 298.

5. al-Waafi bil Wafayaat by al-Safari, V.2, P.227.

6. Kanzul Ummah , V.5, P.651.

7. Abul-Fidaa' in al-Mukhtasar Fi aakhbaar al- Bashar, V.1, P.107.

8. Ibn Taymiyyah (the staunch enemy of Ahlul Bayt) in his book Minhajul Sunnah, V.8, P. 291.

9.Ibn Hajar al-A'sqalani in Lisaan al-Mizan, V.1, P.111.

10. al-Dhahbi in Milan al-E'tidaal, V.1, P. 139 and in Siyar A'laam al-Nubalaa', V. 15, P. 578.

11. Al-Tabarani in al-Mo'jam al-Kabeer , V.1, P. 17.

12, Al-Haithami on Mo'jam al-Zawaa'id, V.2, P. 353.

and many other Sunni sources.

Wassalam.

Every Muslim is responsible to obey Allah The Exalted and follow the Prophet SAWA. We are not allowed to blindly follow our families, culture, society in matters of faith without evidence. When the Muslim establishes concrete evidence that he is working according to the orders of Allah The Exalted, from Quran and according to the authentic orders of the Prophet of Islam SAWA, then he does not need to go through the different sects. We read in the books of Hadeeth that the Muslim Ummah will be divided into 73 sects, out of which just one sect will go straight to Paradise. The 72 sects which remain also had many sub sects over the many past centuries.A Muslim is not responsible to go through all the sects and sub sects as far as he has established authentic and concrete evidence that he is following the clear orders of the Prophet of Islam SAWA which was to keep following the Quran and Ahlulbayt AS.

Wassalam 

Marriage between Muslims from any Islamic sect is permissible in principle, but if you know that this marriage can harm your faith or religious practice, then you should avoid it because saving your faith and religious practice is more important than marriage. Your mother's happiness can not be through endangering your future. You should explain to her in suitable and polite way your situation and never allow such forced marriage if you feel that it can harm your faith or religious practice.

'Wassalam.

1.The Prophet Muhammad (SAWA) was aware the he is about to leave this world, so, he tried his best to secure the future of Islam and Muslims after his departure by declaring his successors in front of Muslims, which he did while returning from his farewell Hajj in the most authentic Hadeeth of Al-Ghadeer in which he clearly announced ( For whom so ever I am the Master, Ali is his Master من كنت مولاه فعلي مولاه

2.This Hadeeth has been narrated by biggest number of authentic companions.

'The Prophet (SAWA) was aware about some persons who did not like the leadership of Ali after the Prophet,v so, he ordered them to leave Madinah and join the army if Usamah. He cursed those who disobey his order and stay back in Madinah. Many of them returned back again this orders despite his statement (لعن الله من تخلف عن جيش أسامة).

3. When the Prophet saw them back in Madinah, he ordered them to let him write his last will, which should protect the Ummah from going astray. The disobeyed him and refused to let him write his last will. This is mentioned in Saheeh Al-Bukhari and other main Sunni books.

4. When the Prophet (SAWA) passed away, some companions went to Saqeefa leaving the Prophet unbarried and made their arrangements with the hypocrites to take over the rule misusing that Ali (AS) and pious companions were busy is preparing the funeral of the Prophet.

5. Imam Ali (AS) and all Ahlul Bayt (AS) rejected Saqeefa rulers and never gave allegiance to them, which lead Saqeefa rulers attack the house of Fatima, the daughter of the Prophet and threaten to burn it in its people as you can read in Tareekh Al-Tabari and many other Sunni books.

'These are few facts from many other facts which changed the history of many Muslims from following the Prophetic Islam to following Saqeefa rulers.

'Wassalam.

Shia Muslims follow the authentic narrations from Ahlul Bayt (AS) in every matter, while Sunni Muslims follow narrations from other than Ahlul Bayt (AS) like Abu Huraira, Ayisha, etc.

The most authentic narrations from the Progeny of the Prophet (SAWA) state his birth date as 17th of Rabi'ul Awaal.

'Sunni books have different birth dates which shows that Sunnis themselves don't have one date although many of them take 12th Rabi'ul Awwal as the birth day and death date of the Prophet (SAWA).

Obviously, no one knows the birth date and death day more than the family members,that us why we, Shia Muslims follow Ahlul Bayt (AS) in this matter and every matter.

'Wassalam.

No. Muslim woman is not allowed to have a child through any procedure including IVF from a sperm of a man who is not her legitimate husband. 

Wassalam.

Jurisprudence is a big field of Islamic knowledge which has its own experts who spend decades of years to be able to study the evidence from Quranic verses after going through all the fields of Quranic studies, and the authentic Hadeeths after going through the fields of Hadeeth and Rijaal which deals with assessing the authenticity of every narration. We also have the principles of Fiqh which is logic of jurisprudential thinking. 
'You need to go through the evidence confirmed by the great jurisprudence scholars or Maraaji' of Taqleed to see the reasons of any Islamic rule including your question.

'In brief, Islam does not permit RIBA (usury) between Muslims, but not every interest known today is usury. When non Muslims keep your money and put is their business and give you whatever they everyone else from their profit, it is permissible for you to accept it. This is according to the jurisprudence evidence which has details in jurisprudence books written by the Maraaje' of Taqleed. You are accepting what they usually give to every one who keeps his money with them as part of their business.

'Wassalam.

There are many useful books e.g. Then I was Guided by Dr Tijani , Thr Right Path by Sayyed Sharafuddin, You can find on these websites lot of useful books

www.Al-Islam.org

www.shiasearch.org

www.aqaed,com

Wassalam.

Shia Muslims follow the authentic Sunnah of the Prophet Muhammad (SAWA) which was taken from the most reliable narrators who are Ahlul Bayt (AS). Non Shia Muslims follow weak narrations fabricated by their rulers who did not care for the real Sunnah but paid money to narrators to fabricate whatever the rulers wanted. Wiping over the socks is against Quran which orders to wipe over the feet not the socks. Sura 5, verse 6.

'Wassalam.

If you feel that Mut'ah marriage is the only way to protect you from sinning, then you should go for it and do your best to save yourself from any sinful act. Virgin girl needs her father's permission for any type of marriage.

'Wassalam.